Water-heating apparatus.



PATENTED APR.1 0

W. S. WHITMORE. WATER HEATING APPARATUS.

APPLICATION FILED MAY 29, 1905.

UNITED STATES PATENT EEroE.

WATER-H EATING APPARATUS- Specification of Letters Patent.

Patented April 10, 1906.

Application filed May 29, 1906. Serial No. 262,895.

To all whom it nutg concern:

Be it known that I, WILLIAM SYRE WHIT- MORE, a subject of the King ofGreat Britain, residing at 34 Gratton Terrace, Cricklewood, in thecounty of Middlesex, England, have invented a new and useful Improvementin Water-Heating Apparatus, of which the following is a specification.

My invention is an improvement in waterheating apparatus; and theobjects of my improvement are, first, to make the entire apparatus verysimple, cheap, and effective, and, second, to reduce the consumption ofthe fuel required for heating. I attain these objects by the meansillustrated in the accompanying drawings, in which Figure 1 is a sideview of the entire apparatus; Fig. 2, a longitudinal section throughFig. 1, and Fig. 3 a back view of the heatingchamber with the remainderof the apparatus removed.

Similar letters of reference refer to similar parts throughout theseveral views.

a is an inner nearly horizontal pipe, of zinc or other sheet metal, soarranged that at one end, which is lower than the other end, the flameand heat of an oil-lamp b or other heating contrivance can enter andpass completely through its entire length, whence they are conductedaway by means of a pipe 0 to a chimney. Surrounding this inner pipe,except at the part where the heat enters the latter at d, is fixed asecond pipe 6 of larger diameter, the ends of which are stopped at andg, and this outer pipe is fitted with an opening at h, by which it canbe filled with water. In the space '5 between the inner and outer pipesdescribed and for a considerable part of their length I fit and fix ahelical endless band or screw j, of thin metal, the effect of which isto cause the water to rapidly circulate in the space between thetwo-pipes when the heat is applied in the manner described. This helicalscrew does not completely fill the space between the inner and outerpipes, but a sufficient space Zc is left between the inner side of theouter pipe 6 and the edge of the helical band j for the circulation ofthe water, which is promoted by the whole apparatus being slightlyraised at the end farthest from the heating lamp, as shown.

Z is a chamber surrounding the lamp or other heating device Z), and theupper part of the inner pipe a is prolonged at n into this chamber Zabove the heater. as shown at m, and affords additional heating-surface.

m is a hinged door at the side of the chamber Z for facilitating theadjusting of the flame.

Heating apparatus constructed according to my invention is extremelyeflective in operation, the water being heated very rapidly and atlittle cost for fuel. An oil-lamp, an ordinary gas-burner, or othersuitable device may be used for obtaining the necessary heat.

The details of the apparatus may be varied according to the size andcharacter of the place to be heated.

Having fully described my invention, what I desire to claim and secureby Letters Patent is 1. In a water-heating apparatus, thecombination ofan inner inclined pipe with an outer inclined pipe, closed at its ends,a helical endless band upon the inner pipe leaving a space between theinside of the outer pipe and the outeredge of the helical band, adischarge-pipe leading from the upper end of the inner pipe, a chambercommunicating with the lower end of the inner pipe, and a f heatingdevice located in said chamber adjacent one end of said pipes,substantially as described.

2. In a water-heating apparatus, the combination of an apertured casingforming a chamber forreceiving a heating device, and a water-pipe havinga part of one end cut away,

said end being adapted to fit snugly within .said casing, substantiallyas described.

In witness whereof I have hereunto set my hand in the presence of twowitnesses.

WILLIAM SYRE VVHITMORE. Witnesses:

ARTHUR E. EDWARDS. ALFRED G. BRATTON.

